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铜代
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  copper substitution reaction
     Watersoluble tea green pigment(TGP) were extracted from low grade tea leaf and waste tea etc. Physicochemical properties and processes on saponification and copper substitution reaction were investigated.
     利用低档茶叶及其废弃物制取纯天然水溶性茶绿色素,并对该色素的性质、制备过程中的两个主要工序———皂化、铜代的最佳工艺条件进行了研究。
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  “铜代”译为未确定词的双语例句
     This paper studies the technolog ical process of sodium copper chlorophyll from water lettuce leaves. Based on orthog onal experiment,the best reaction conditions have been chosen as follows:extraction for 1hour by 95%ethanol at 70℃,saponification for 50min by 5%NaOH,reaction with20%CuSO 4 for 40min,preparation of sodium copper chlorophyll by 2%NaOH.
     研究以水浮莲叶为原料制取叶绿素铜钠的工艺,通过正交试验找出最佳工艺条件为:用95%乙醇在70℃提取1h,5%NaOH溶液皂化50min,20%CuSO4溶液铜代40min,2%NaOH溶液成盐。
短句来源
     At pH value 3.0,temperature of water bath 80 ℃ for 60 min,a high proportion sodium copper chlorophyllin was achieved.
     然后将溶液pH值调为3.0,在80℃水浴煮60min,可使铜代完全;
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     The technology of preparing sodium-copper chlorophyllin from carrot leaves was studied .
     由胡萝卜樱叶提取叶绿素并经皂化、铜代及成盐反应制备叶绿素铜钠。
短句来源
     The results showed that the optimal coppering reaction condition was as follow: the weight ratio of elm leaves powder to 10 % CuSO 4 was 1∶8, the reaction tempterature was 60 ℃, the reaction time was 1 h, the yield of the pigment was up to 9.67 %, and the sodium-copper chlorophyllin was very stable on heating, lighting, reducing and some food additives, but resistance to oxidation was poor.
     结果表明 ,铜代反应最佳工艺条件为 :榆树叶粉与 10%硫酸铜溶液质量比为 1∶8,反应温度 6 0℃ ,反应时间 1h ,得率达 9.6 7% ,叶绿素铜钠耐热、耐光、耐还原性较好 ,耐氧化性较差。
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     Natural chlorophyll is extracted from filtered waste of bitter gourd that is used to produce chlorophyll production. Though it has not been done by copper sulfate and saponification, the stability of chlorophyll which is extracted from bitter gourd is quite good by the aspects of which 95% alcohol is used to extract chlorophyll in 45℃, pH value is 8.0, the time of extraction is 2h, brown bottles are used to fill chlorophyll liquid.
     对生产苦瓜产品过程中被丢弃的鲜绿苦瓜滤渣进行分离提取天然叶绿素,不经过铜代、皂化等处理,采用95%乙醇作提取溶剂,按料液比为1∶3、提取温度为45℃、pH值为8.0、提取时间为2h,利用棕色瓶盛装提取液,所得的苦瓜叶绿素稳定性较好。
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  相似匹配句对
     COPPER
    
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     So the G-code grou-ping and its implementation is described in detail.
     G
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     Within the layer the copper?
     ?
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     Research and Utilization on the Zinc-based Die Casting Alloy Substituting for Copper.
     锌基压铸合金的研究与应用
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     The Replacement of Granulated Copper Slag for Sand Concrete
     水淬砂混凝土
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Lots of silver and copper materials are consumed iu the Industries of electronics, communication, aerospace and ect. every year in our country, This article is a scientific feasibility evalutiou based on a series of electrical, chemical researches and solderability, antiwear experiments. The results shows that it is possible to partially, even mainly substitute copper for silver or aluminium for copper. The Practical methods of saving on silver, copper and other Precious metals are also Present in this paper...

Lots of silver and copper materials are consumed iu the Industries of electronics, communication, aerospace and ect. every year in our country, This article is a scientific feasibility evalutiou based on a series of electrical, chemical researches and solderability, antiwear experiments. The results shows that it is possible to partially, even mainly substitute copper for silver or aluminium for copper. The Practical methods of saving on silver, copper and other Precious metals are also Present in this paper a great economic benefit will be obtained when this ideas are realized and it is of great strategical significance in protecting precious mineral resources in our Country.

在我国电子、邮电、航天等领域中,每年消耗着大量的白银和钢材。本文通过电气、化学、焊接和抗磨性能等多种试验和研究以及各种科学论证和分析,说明是可以部分或大部分采取以铜代银,以铝代铜,实现节省白银和铜材等贵重金属的,并提出了具体的节省途径和方法。这一目的在我国的实现将会产生巨大的经济效益,对保护贵重矿物资源有着深远的战略意义。

This paper introduces a new thin film conductor system which replaced Au with Cu, and which is used in hybrid Microwave Integrated Circuits. The conductor system is made up of four kinds of materials, namaly Cr、Cu、Ni and Au (CCNA). Compared with the common Cr-Au andCr-Cu-Au conductor system, CCNA conductor system has the same microwave properties, while it is obviously superior to the former in the solderability and the stability during high temperature thermal processing, and the comsuption of the precious...

This paper introduces a new thin film conductor system which replaced Au with Cu, and which is used in hybrid Microwave Integrated Circuits. The conductor system is made up of four kinds of materials, namaly Cr、Cu、Ni and Au (CCNA). Compared with the common Cr-Au andCr-Cu-Au conductor system, CCNA conductor system has the same microwave properties, while it is obviously superior to the former in the solderability and the stability during high temperature thermal processing, and the comsuption of the precious metal Au has decreased greatly. CCNA conductor system can be produced easily and is compatible with other thin film techniques, and the facilities in manufacture are universal. CCNA conductor system has also been applied to other field of the Thin Film Hybrid Integrated Circuits.

本文介绍了一种用于微波混合集成电路中的新型的以铜代金的薄膜导电系统即由Cr-Cu-Ni-Au四种材料构成的薄膜导电系统(以下简称CCNA导电系统)。该导电系统与传统的Cr-Au及Cr-Cu-Au结构的薄膜导电系统相比,其微波性能相当,而焊接性能和高温性能则明显优越,贵金属材料金的消耗量也大为减少。该导电系统的制作工艺简便,且与其它的薄膜工艺相容,设备具有通用性。该导电系统在薄膜混合集成电路的其它领域内也得到了应用。

Silver plating process is usually used in producing glass vacuum bottles. However, the substitution of silver with copper greatly reduces the production costs This paper recommends t■ rocess of electroless Cu-plating on glass vacuum boitles, presenting the testing method and process as well as testing results.

生产保温瓶一般都采用镀银工艺,以常见金属代替贵金属是降低生产成本的重要方法。以铜代银大大降低生产成本,详细介绍玻璃保温瓶胆化学镀铜的试验方法,工艺过程及测试结果。

 
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